SPC 1630Z Day 1 Outlook

Day 1 Outlook Image

Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
1015 AM CST Mon Nov 16 2020

Valid 161630Z - 171200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Severe thunderstorms are not expected across the contiguous U.S.
through tonight.

...South FL...
Isolated showers currently east-southeast of the Space Coast should
increase in coverage as they spread southwestward along/ahead of a
weakly convergent cold front pushing south from central FL. Rather
poor 700-500 mb lapse rates between 4-5 C/km as sampled by regional
12Z soundings will be a limiting factor to sustaining charge
separation, but adequate buoyancy exists for a risk of isolated
thunderstorms.

...Coastal WA...
A pronounced low-level warm advection regime will shift north from
the Columbia Valley today. Scant elevated buoyancy may develop as
850-mb dew points rise to around 9 C this afternoon. Very isolated
lightning could accompany deeper showers through early evening.

..Grams.. 11/16/2020

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